How do you get your 3 year old to take naps?

with my 3 year old i have to ware her out a bit to get her to take a nap. i would start waring them out for like a week right before u want them to nap and just make sure u always lay them down around the same time. my daughter has school and when she gets home she is so tired and i have no problem laying her down for a nap.